+15，﹣2，+5，﹣1，+10，﹣3，﹣2，+12，+4，﹣5，+6
有关CuSO4制备途径及性质如图所示．
已知：
①Cu+2H2SO4（浓） CuSO4+SO2↑+2H2O．
②在一个化学反应中，如果有元素化合价升高，同时就有元素化合价降低．下列说法不正确的是（ ）
A.I live far from my office. I go to work by underground every day.
B. My sister is a pupil. She goes to school by school bus.
C. This is my mother. She goes to Beijing by plane.
D. My uncle lives far from his office. He goes to work by taxi every day.
⑴ ____
⑵ ____
⑶ ____
⑷ ____
如图所示，请在图中无线电广播的发射过程图的空格中填入恰当的器材和元件名称．
CuSO4+SO2↑+2H2O．
